At first glance it looks like a stick, or a loose branch of soft coral drifting at a strange angle. Then the stick turns its head. The trumpetfish is one of the oddest-looking fish on Punta Cana's reefs, a long, thin tube with a trumpet for a face, and it is also one of the cleverest hunters you will see on a dive.

What makes the trumpetfish worth watching is not how it looks but what it does. It hangs head-down among sea rods pretending to be one of them, changes color to match its background, and slips in behind other fish to sneak up on prey that would otherwise see it coming. Once you know these tricks, every dive turns into a game of spot-the-trumpetfish.

Quick Facts

Name: trumpetfish or Atlantic trumpetfish, Aulostomus maculatus
Size: commonly around 60 cm (2 ft); the largest reach about 1 m (3 ft 3 in)
Diet: small fish and crustaceans, swallowed whole
Depth: about 2–25 m (6–82 ft), often in the shallows
Range: western Atlantic, from Bermuda and southern Florida through the Gulf of Mexico and the Caribbean to northern South America
Habitat: coral reefs and hard bottom, especially areas with plenty of sea rods, sea plumes and other soft corals
Status: listed as Least Concern by the IUCN

How to Recognize a Trumpetfish

There is not much else on the reef shaped like it. The body is long, narrow and slightly compressed, ending in a small, rounded, fan-shaped tail. The snout is a long tube with a small mouth at the end and a tiny barbel hanging under the chin. Along the back runs a row of short, separate spines, which the fish can raise like a comb. The scientific name maculatus means "spotted", and most trumpetfish carry scattered dark spots or short dark lines along the body.

Color is the confusing part, because it changes. Most trumpetfish you will see are brown, grey or reddish brown, often with pale stripes or bands. Some are bright yellow, and others take on a bluish tint around the head. The same fish can lighten, darken or shift its pattern in a matter of seconds, which helps it blend into whatever it is hiding next to.

The only real look-alike is the bluespotted cornetfish (Fistularia tabacaria). It is similarly long and tube-snouted, but its body is smooth and pale with blue spots, it usually swims horizontally over sand and seagrass, and its tail ends in a long, whip-like filament. If you see a fan-shaped tail and a row of little spines on the back, it is a trumpetfish.

Behavior: Three Ways to Hide

Trumpetfish are ambush predators. They are slow swimmers, so instead of chasing prey they get close without being noticed and then strike. When the moment comes, the mouth snaps open to about the width of the body and the fish sucks its prey in through the tube in a fraction of a second, a technique called suction feeding. They use three main tricks to get that close.

Head-down camouflage. A trumpetfish will often hover vertically, snout pointing at the bottom, among sea rods and sea whips. With its long body and a matching color, it simply disappears among the branches, and small fish swim past within easy reach. Our deep-dive on sea fans, sea whips and soft corals covers the soft corals it hides among.

Shadowing. This is the trick divers love most. A trumpetfish swims tight against the back or side of a larger, harmless fish, usually a parrotfish, matching its every move. Small fish on the reef have no reason to flee from a grazing parrotfish, so the trumpetfish rides along unseen. A 2023 study in Current Biology tested this off Curaçao with 3D-printed models: bicolor damselfish fled from a model trumpetfish alone, but reacted to a trumpetfish attached to a parrotfish no more than to the parrotfish by itself. The researchers suggest the trick may become more common as reefs lose structure to hide in.

Color matching. Changing color lets a trumpetfish blend into a yellow sponge, a brown sea rod or the side of the fish it is shadowing. Most of these changes come from pigment cells in the skin that expand and contract.

Trumpetfish are usually solitary. Like many reef fish, they release their eggs into open water.

Where to See Trumpetfish in Punta Cana

Trumpetfish are common on almost every reef dive in Punta Cana, and because they live as shallow as 2 m, snorkelers see them too. The trick is knowing where to look. On shallow sites such as El Niño and Finger Coral Plantation, both at about 6 m (20 ft), check the patches of sea rods for a "branch" that hangs at the wrong angle. On Park Reef, at 12 m (40 ft), keep an eye on large parrotfish: every so often one of them has a passenger.

They are active during the day, so no special timing is needed. You will also find them on our species guide, together with the other fish our guides point out most often.

Tips for Divers and Snorkelers

Hover and wait. A trumpetfish that is hunting is easy to scare off. Stay still a few meters away and you may see it strike.
Do not chase it or pin it against the reef. Trumpetfish are harmless, but crowding them stresses them and wrecks their hunt.
Watch the parrotfish. When a big parrotfish swims by, look at its back and sides before it passes. Spotting a shadowing trumpetfish is a real reward.
Keep your fins up. Sea rods and soft corals are easily broken, so stay above them rather than kneeling among them.
For photos, a vertical frame suits the long body. Shoot the head-down pose from the side, against blue water if you can.

Frequently Asked Questions

Are trumpetfish dangerous?

No. They have no venom and no teeth worth worrying about, and they show no interest in people. The only creatures that need to fear a trumpetfish are small fish and shrimps.

Why do trumpetfish swim upside down?

They are not really upside down; they hang head-down, nearly vertical. It helps them blend in with sea rods and sea whips while they wait for prey to come close.

How big do trumpetfish get?

Most are around 60 cm (2 ft), and the biggest reach about 1 m (3 ft 3 in), according to FishBase.

Can you see trumpetfish snorkeling in Punta Cana?

Yes. They are found as shallow as 2 m (6 ft), so snorkelers often spot them over shallow reefs, especially around patches of soft corals.

Because trumpetfish live in such shallow water, you can meet one on your very first dive. Our Discover Scuba Diving experience takes you to a maximum of 6 m (20 ft), right where they like to hunt.